Estimating the galaxy power spectrum of the VIPERS galaxy distribution

2Estimating the galaxy power spectrum of the VIPERS galaxy distribution The power spectrum is a statistic that describes the clustering of matter in Fourier space. The shape and amplitude of the power are directly predicted by theory and direct measurements of the power can constrain cosmological parameters. The large size of recent surveys has opened new windows in the observation of secondary features of the galaxy power spectrum such as the Baryonic Acoustic Oscillations (BAO), which used as standard ruler can infer dark energy properties, and Redshift-Space Dis-tortions (RSD), which thanks to the anisotropic observed clustering in redshift space can discriminate between different theories of gravity. In this thesis, we apply the power spectrum statistic to the VIMOS Public Extragalac-tic Redshift Survey (VIPERS) distribution of galaxies in order to study the underlying clustering of matter. VIPERS is an ongoing spectroscopic survey, composed of two fields, W1 and W4, wit